TWI819969B - Full screen display device that emitting and receiving light with different unit pixels - Google Patents
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Abstract
Description
本發明是有關一種全面屏顯示裝置,特別是一種不同單位像素收發光線的全面屏顯示裝置。The present invention relates to a full-screen display device, in particular to a full-screen display device in which different unit pixels receive and receive light.
隨著手機技術的推陳出新及手機用戶需求的不斷提高,為了達到更佳的用戶體驗,智慧型手機的顯示螢幕已朝向全面屏設計發展。為了提供解鎖辨識,屏下光學式指紋或掌紋辨識是目前市面上常見的使用方案。不僅在智慧型手機的應用領域,還包括大樓指紋或掌紋辨識系統和企業出勤指紋或掌紋辨識系統等,都可以使用光學式指紋或掌紋辨識作為應用。With the innovation of mobile phone technology and the continuous improvement of mobile phone user needs, in order to achieve a better user experience, the display screens of smart phones have developed towards full-screen designs. In order to provide unlocking recognition, under-screen optical fingerprint or palmprint recognition is a common solution currently on the market. Not only in the application field of smartphones, but also in building fingerprint or palmprint recognition systems and corporate attendance fingerprint or palmprint recognition systems, optical fingerprint or palmprint recognition can be used as an application.
目前的屏下光學指紋或掌紋辨識都是以鏡頭式為主。將光學鏡頭模組放置在有機發光二極體(Organic Light-Emitting Diode, OLED)的螢幕下方,以偵測按壓在螢幕上的指紋或掌紋變化。The current under-screen optical fingerprint or palmprint recognition is mainly lens-based. The optical lens module is placed under the organic light-emitting diode (OLED) screen to detect changes in fingerprints or palmprints pressed on the screen.
然而,鏡頭式的屏下光學指紋或掌紋辨識必須放置於顯示螢幕下方,透過像素間的透光縫隙,感測反射自手指或手掌的光線。隨著有機發光二極體的演進,螢幕解析度的提升導致螢幕透光度下降以及大範圍的指紋或掌紋辨識的發展方向,習知的鏡頭式的屏下光學指紋或掌紋辨識已經無法滿足需求。However, lens-type under-screen optical fingerprint or palmprint recognition must be placed under the display screen to sense the light reflected from the fingers or palms through the light-transmitting gaps between pixels. With the evolution of organic light-emitting diodes, the increase in screen resolution has led to a decrease in screen transmittance and the development direction of large-scale fingerprint or palmprint recognition. The conventional lens-based under-screen optical fingerprint or palmprint recognition can no longer meet the demand. .
本發明的主要目的在於提供一種不同單位像素收發光線的全面屏顯示裝置,能夠提供半屏或全屏的大面積光學生物特徵辨識技術,以實現滿屏生物特徵按壓的功能。The main purpose of the present invention is to provide a full-screen display device with different unit pixels receiving and transmitting light, which can provide half-screen or full-screen large-area optical biometric identification technology to realize the full-screen biometric pressing function.
本發明的另一目的在於提供一種不同單位像素收發光線的全面屏顯示裝置,能夠提高訊號雜訊比(signal-to-noise ratio, SNR)。Another object of the present invention is to provide a full-screen display device in which different unit pixels receive and receive light, which can improve the signal-to-noise ratio (SNR).
為了達成前述的目的,本發明提供一種不同單位像素收發光線的全面屏顯示裝置,包括一水氧阻絕層、一保護面板、複數個單位像素、一光屏蔽層以及複數個透鏡。該保護面板設置於該水氧阻絕層的上方。該等單位像素設置於該水氧阻絕層的下方。該光屏蔽層設置在該水氧阻絕層的一第一表面上,並且具有複數個開口,該等開口暴露出該等單位像素的各者的至少部分區域。該等透鏡設置在該水氧阻絕層的該第一表面上,並且位於該等開口中。其中,當該全面屏顯示裝置進行生物特徵辨識時,該等單位像素的至少一者界定為一發光元件,該等單位像素的至少一者界定為一感測元件,界定為該感測元件的單位像素具有一感光區。其中,界定為該發光元件的單位像素發射一入射光,該入射光穿過該水氧阻絕層並且藉由該等透鏡的至少一者向外發散,向外發散的入射光穿過該保護面板以後被一待測物反射以產生一反射光,該反射光穿過該保護面板以後進入該等透鏡的至少一者,該等透鏡的至少一者將該反射光匯聚,匯聚的反射光沿著該等透鏡的至少一者的一聚集光徑穿過該水氧阻絕層以後由該感光區接收並且轉換成一影像電訊號。In order to achieve the aforementioned objectives, the present invention provides a full-screen display device with different unit pixels receiving and receiving light, including a water and oxygen barrier layer, a protective panel, a plurality of unit pixels, a light shielding layer and a plurality of lenses. The protective panel is disposed above the water and oxygen barrier layer. The unit pixels are arranged below the water and oxygen blocking layer. The light shielding layer is disposed on a first surface of the water and oxygen blocking layer and has a plurality of openings that expose at least part of each of the unit pixels. The lenses are disposed on the first surface of the water-oxygen barrier layer and located in the openings. Wherein, when the full-screen display device performs biometric recognition, at least one of the unit pixels is defined as a light-emitting element, at least one of the unit pixels is defined as a sensing element, and at least one of the unit pixels is defined as a sensing element. A unit pixel has a photosensitive area. Wherein, the unit pixel defined as the light-emitting element emits an incident light, the incident light passes through the water and oxygen barrier layer and radiates outward through at least one of the lenses, and the radiated incident light passes through the protective panel It is then reflected by an object to be measured to generate a reflected light. The reflected light passes through the protective panel and then enters at least one of the lenses. At least one of the lenses converges the reflected light, and the concentrated reflected light travels along the A condensed light path of at least one of the lenses passes through the water and oxygen barrier layer and is received by the photosensitive area and converted into an image electrical signal.
在一些實施例中,各該透鏡為一微透鏡或一超透鏡。In some embodiments, each lens is a microlens or a metalens.
在一些實施例中,該感光區的一尺寸透過以下條件獲得:(1)該微透鏡的曲面為球面、非球面或非對稱自由曲面,或者,該超透鏡包括奈米微結構;(2)×0.001mm<D<×1000mm;(3)×0.001mm< H<×10mm;(4)0.00005<<0.99995;(5)×0.001÷< R<×1000mm;以及(6)Z2 Z1;其中,A為各該單位像素的一尺寸, B為該感光區的一尺寸,D為該水氧阻絕層的一厚度,H為各該微透鏡的一高度,R為各該微透鏡的曲率,Z1為各該微透鏡的一直徑,Z2為各該開口的一直徑。 In some embodiments, a size of the photosensitive area is obtained through the following conditions: (1) the curved surface of the microlens is a spherical surface, an aspherical surface or an asymmetric free-form surface, or the super lens includes a nanometer microstructure; (2) ×0.001 mm < D < ×1000 mm ; (3) ×0.001 mm < H < ×10 mm ; (4)0.00005< <0.99995;(5) ×0.001÷ < R < ×1000 mm ; and (6) Z 2 Z 1; where A is the size of each unit pixel, B is the size of the photosensitive area, D is the thickness of the water and oxygen barrier layer, H is the height of each microlens, and R is the height of each microlens. As for the curvature of the lens, Z1 is the diameter of each microlens, and Z2 is the diameter of each opening.
在一些實施例中,所述的全面屏顯示裝置進一步包括一光吸收層,該光吸收層設置在界定為該感測元件的單位像素與該水氧阻絕層之間,該光吸收層開設一通孔,該感光區位於該通孔的下方,該光吸收層不吸收界定為該感測元件的單位像素的放光波長。 In some embodiments, the full-screen display device further includes a light-absorbing layer disposed between the unit pixel defined as the sensing element and the water-oxygen barrier layer, and the light-absorbing layer opens a passage hole, the photosensitive area is located below the through hole, and the light absorbing layer does not absorb the emission wavelength defined by the unit pixel of the sensing element.
在一些實施例中,該通孔配置於該等透鏡的其中之一的一聚焦光徑上且位於該光吸收層的中央,且該感光區位於界定為該感測元件的單位像素的中央。 In some embodiments, the through hole is disposed on a focusing optical path of one of the lenses and is located at the center of the light absorption layer, and the photosensitive area is located at the center of the unit pixel defined as the sensing element.
在一些實施例中,各該透鏡為一微透鏡或一超透鏡,該感光區的一尺寸與該通孔的一孔徑透過以下條件獲得:(1)該微透鏡的曲面為球面、非 球面或非對稱自由曲面,或者,該超透鏡包括奈米微結構;(2)×0.001mm< D<×1000mm;(3)×0.001mm<H<×10mm;(4) 0.00005<<0.99995;(5)×0.001÷<R<×1000mm;以 及(6)Z2 Z1;其中,A為各該單位像素的一尺寸,B為該感光區的一尺寸及該通孔的一孔徑,D為該水氧阻絕層的一厚度,H為各該微透鏡的一高度,R為各該微透鏡的曲率,Z1為各該微透鏡的一直徑,Z2為各該開口的一直徑。 In some embodiments, each lens is a microlens or a super lens, and a size of the photosensitive area and an aperture of the through hole are obtained through the following conditions: (1) the curved surface of the microlens is a spherical surface, an aspherical surface, or a super lens. Asymmetric free-form surface, or the super lens includes nanometer microstructure; (2) ×0.001 mm < D < ×1000 mm ; (3) ×0.001 mm < H < ×10 mm ; (4) 0.00005< <0.99995;(5) ×0.001÷ < R < ×1000 mm ; and (6) Z 2 Z 1; where A is the size of each unit pixel, B is the size of the photosensitive area and the aperture of the through hole, D is the thickness of the water and oxygen barrier layer, and H is the thickness of each microlens. Height, R is the curvature of each microlens, Z1 is a diameter of each microlens, and Z2 is a diameter of each opening.
在一些實施例中,該等單位像素包括複數個紅光單位像素、複數個藍光單位像素及複數個綠光單位像素;其中,當該全面屏顯示裝置進行生物特徵辨識時,界定為發光元件的單位像素為該等藍光單位像素,界定為該感測元件的單位像素為該等紅光單位像素,無作用的單位像素為該等綠光單位像素。In some embodiments, the unit pixels include a plurality of red light unit pixels, a plurality of blue light unit pixels and a plurality of green light unit pixels; wherein, when the full-screen display device performs biometric identification, the pixels defined as the light-emitting elements are The unit pixels are the blue light unit pixels, the unit pixels defined as the sensing element are the red light unit pixels, and the inactive unit pixels are the green light unit pixels.
在一些實施例中,該等單位像素包括複數個紅光單位像素、複數個藍光單位像素及複數個綠光單位像素;其中,當該全面屏顯示裝置進行生物特徵辨識時,界定為該發光元件的單位像素為該等藍光單位像素,界定為該感測元件的單位像素為該等綠光單位像素,無作用的單位像素為該等紅光單位像素。In some embodiments, the unit pixels include a plurality of red light unit pixels, a plurality of blue light unit pixels, and a plurality of green light unit pixels; wherein, when the full-screen display device performs biometric identification, the light-emitting element is defined The unit pixels are the blue light unit pixels, the unit pixels defined as the sensing element are the green light unit pixels, and the inactive unit pixels are the red light unit pixels.
在一些實施例中,該等單位像素包括複數個紅光單位像素、複數個藍光單位像素及複數個綠光單位像素;其中,當該全面屏顯示裝置進行生物特徵辨識時,界定為該發光元件的單位像素為該等綠光單位像素,界定為該感測元件的單位像素為該等紅光單位像素,無作用的單位像素為該等藍光單位像素。In some embodiments, the unit pixels include a plurality of red light unit pixels, a plurality of blue light unit pixels, and a plurality of green light unit pixels; wherein, when the full-screen display device performs biometric identification, the light-emitting element is defined The unit pixels of are the green light unit pixels, the unit pixels defined as the sensing element are the red light unit pixels, and the inactive unit pixels are the blue light unit pixels.
在一些實施例中,所述的全面屏顯示裝置進一步包括一有機發光二極體,該有機發光二極體設置於該水氧阻絕層的一第二表面或其下方並且包括該等單位像素。In some embodiments, the full-screen display device further includes an organic light-emitting diode, which is disposed on or below a second surface of the water-oxygen blocking layer and includes the unit pixels.
本發明的功效在於,本發明的全面屏顯示裝置能夠藉由透鏡將反射光匯聚到感光區,同時界定為感測元件的單位像素不放光,使得感光區的尺寸大小的差異能夠阻絕生物特徵的串擾,藉以得到清晰的生物特徵影像。藉此,本發明的全面屏顯示裝置能夠提供半屏或全屏的大面積光學生物特徵辨識技術,以實現滿屏生物特徵按壓的功能。The effect of the present invention is that the full-screen display device of the present invention can collect reflected light to the photosensitive area through the lens, and at the same time, the unit pixel defined as the sensing element does not emit light, so that the difference in size of the photosensitive area can block biometric characteristics crosstalk to obtain clear biometric images. Thereby, the full-screen display device of the present invention can provide half-screen or full-screen large-area optical biometric recognition technology to realize the full-screen biometric pressing function.
再者,當本發明的全面屏顯示裝置進行生物特徵辨識時,除了界定為感測元件的單位像素的放光波長以外,外界的雜散光的波長和界定為發光元件的單位像素的訊號光波長皆會被光吸收層所吸收,降低外界的雜散光和界定為發光元件的單位像素的訊號光反射和漫射的串擾。因此,只有匯聚的反射光會沿著透鏡的聚焦光徑通過光吸收層的通孔集中在感光區上,藉以提高訊號雜訊比(signal-to-noise ratio, SNR)。Furthermore, when the full-screen display device of the present invention performs biometric identification, in addition to the emission wavelength defined as the unit pixel of the sensing element, the wavelength of the stray light from the outside and the signal light wavelength defined as the unit pixel of the light-emitting element All will be absorbed by the light-absorbing layer, reducing external stray light and the crosstalk of signal light reflection and diffusion defined as the unit pixel of the light-emitting element. Therefore, only the concentrated reflected light will pass through the through hole of the light absorbing layer along the focused light path of the lens and be concentrated on the photosensitive area, thereby improving the signal-to-noise ratio (SNR).
以下配合圖式及元件符號對本發明的實施方式做更詳細的說明,俾使熟習該項技藝者在研讀本說明書後能據以實施。The following is a more detailed description of the embodiments of the present invention with reference to drawings and component symbols, so that those skilled in the art can implement them after reading this specification.
圖1是本發明的第一實施例的結構示意圖。如圖1所示,本發明提供一種不同單位像素收發光線的全面屏顯示裝置,包括一水氧阻絕層10、一保護面板20、複數個單位像素31、32、33、一光屏蔽層40以及複數個透鏡51、52、53。保護面板20設置於水氧阻絕層10的上方。該等單位像素31、32、33設置於水氧阻絕層10的下方。光屏蔽層40設置在水氧阻絕層10的一第一表面11上並且具有複數個開口41,該等開口41暴露出該等單位像素31、32、33的各者的至少部分區域。該等透鏡51、52、53設置在水氧阻絕層10的第一表面11上,並且位於該等開口41中。Figure 1 is a schematic structural diagram of the first embodiment of the present invention. As shown in Figure 1, the present invention provides a full-screen display device with different unit pixels receiving and receiving light, including a water and
當本發明的全面屏顯示裝置作為顯示螢幕時,該等單位像素31、32、33發射一入射光,入射光穿過水氧阻絕層10並且藉由該等透鏡51、52、53向外發散,向外發散的入射光穿過保護面板20向外射出,達到全面屏顯示的功效。When the full-screen display device of the present invention is used as a display screen, the
圖2是本發明的第一實施例進行生物特徵辨識的示意圖。如圖2所示,當本發明的全面屏顯示裝置進行生物特徵辨識時,單位像素32界定為一發光元件,單位像素31界定為一感測元件,界定為感測元件的單位像素31具有一感光區311。界定為發光元件的單位像素32發射一入射光,入射光穿過水氧阻絕層10並且藉由透鏡52向外發散,向外發散的入射光穿過保護面板20以後被一待測物100反射以產生一反射光,反射光穿過保護面板20以後進入透鏡51,透鏡51將反射光匯聚,匯聚的反射光沿著透鏡51的一聚集光徑511穿過水氧阻絕層10以後由感光區311接收並且轉換成一影像電訊號。Figure 2 is a schematic diagram of biometric identification according to the first embodiment of the present invention. As shown in FIG. 2 , when the full-screen display device of the present invention performs biometric identification, the
圖2顯示的待測物100為手指,因而生物特徵為指紋。在一些實施例中,待測物100也可以是手掌,因而生物特徵可以是靜脈或掌紋。The
光屏蔽層40能夠屏蔽外界的雜散光,且光屏蔽層40可由任何能夠屏蔽光的材質形成。舉例來說,所述屏蔽光的材質可包括吸光材質,但不以此為限。舉例來說,光屏蔽層40的材質可包括黑色油墨或黑色光阻。此外,光屏蔽層40可由印刷的方式形成在表面上。然而,光屏蔽層40的材質、顏色及其形成於表面上的方式可依需求改變,而不限於上述。The
如圖1所示,在第一實施例中,各透鏡51、52、53為一微透鏡(Micro Lens)。在一些實施例中,各透鏡51、52、53也可以是一超透鏡(Meta Lens)。微透鏡和超透鏡都具有將入射光向外發散以及將反射光匯聚等功能,二者的作用原理為眾所周知的通常知識,故不予贅述。As shown in FIG. 1 , in the first embodiment, each
如圖1所示,感光區311的尺寸透過以下條件獲得:(1)微透鏡的曲面為球面、非球面或非對稱自由曲面,或者,超透鏡包括奈米微結構(圖未示);(2)
;(3)
;(4)
;(5)
;以及(6)
。其中,A為各單位像素的一尺寸,B為感光區311的一尺寸,D為水氧阻絕層10的一厚度,H為各微透鏡的一高度,R為各微透鏡的曲率,Z1為各微透鏡的一直徑,Z2為各開口41的一直徑。藉由上述條件,感光區311具有較小的尺寸。
As shown in Figure 1, the size of the
更明確地說,感光區311的尺寸大小與串擾(cross talk)的影響有很大的關係,原則上感光區311的尺寸愈小(例如,感光區311的尺寸小於單位像素的尺寸的1/10),串擾的影響愈小,再配合透鏡51將反射光匯聚在感光區311中,因此界定為發光元件的單位像素32的訊號光能量並不會因為感光區311的尺寸較小而減少,反而同時可以達到更好阻絕串擾的效果。重要的是,感光區311的尺寸愈小,更不會影響到界定為感測元件的單位像素31在正常顯示下的顏色及可視角。To be more clear, the size of the
如圖1所示,在第一實施例中,本發明的全面屏顯示裝置進一步包括一有機發光二極體30,有機發光二極體30設置於水氧阻絕層10的一第二表面12並且包括該等單位像素31、32、33。As shown in FIG. 1 , in the first embodiment, the full-screen display device of the present invention further includes an organic light-emitting
圖3是本發明的第一實施例的有機發光二極體30的剖面圖。如圖3所示,在第一實施例中,有機發光二極體30進一步包括一基板34、一像素電路35、一平坦化介電層36、一阻隔井37及一封裝層38,且各單位像素31、32、33包括一陽極301、一電洞傳輸層302、一發光層303、一電子傳輸層304以及一陰極305。基板34例如但不限於玻璃基板、聚對苯二甲酸乙二酯(PET)基板、烯烴聚合物(COP)基板、透明聚醯亞胺(CPI)基板、聚萘二甲酸乙二酯(PEN)基板、聚碳酸酯(PC)基板、聚醚碸(PES)基板、或偏光膜。像素電路35設置在基板34上,耦接該等單位像素31、32、33,並且用以控制該等單位像素31、32、33。平坦化介電層36設置於該等單位像素31、32、33的底部與像素電路35之間。平坦化介電層36上具有事先以黃光蝕刻製程製作的一阻隔井37(bank),並且該等單位像素31、32、33的陽極301藉由穿過阻隔井37之間的一導孔連接至對應的像素電路35。封裝層38設置於該等單位像素31、32、33的頂部,封裝層38可以是無機封裝材料的單層、無機封裝材料的多層堆疊或成對的無機封裝材料與有機封裝材料的堆疊。無機封裝材料例如但不限於氮化矽(SiN
x)、氧化矽(SiO
x)、氮氧化矽(SiON
x)、氧化鋁(AlO
x)或氧化鈦(TiO
x)。
FIG. 3 is a cross-sectional view of the organic
在第一實施例中,該等單位像素31、32、33包括複數個紅光單位像素、複數個藍光單位像素及複數個綠光單位像素。當本發明的全面屏顯示裝置作為顯示螢幕時,該等紅光單位像素發射紅光入射光(波長介於620 nm至750 nm之間),該等藍光單位像素發射藍光入射光(波長介於430 nm至495 nm之間),該等綠光單位像素發射綠光入射光(波長介於495 nm至570 nm之間)。紅光入射光、藍光入射光和綠光入射光穿過水氧阻絕層10並且分別藉由該等透鏡51、52、53向外發散,向外發散的紅光入射光、藍光入射光和綠光入射光穿過保護面板20向外射出,達到全面屏顯示的功效。In the first embodiment, the
如圖2所示,在第一實施例中,當本發明的全面屏顯示裝置進行生物特徵辨識時,界定為發光元件的單位像素32為該等藍光單位像素,界定為感測元件的單位像素31為該等紅光單位像素,無作用的單位像素33則為該等綠光單位像素(即,處於關閉狀態,不發射入射光,也不接收反射光)。As shown in FIG. 2 , in the first embodiment, when the full-screen display device of the present invention performs biometric identification, the
圖4是有機發光二極體30的主體材料的吸收光譜和放光光譜的曲線圖。如圖4所示,一般的有機發光二極體30使用螢光材料或磷光材料作為發光層的主體材料,當主體材料的特性為材料內部的分子吸收比自身能量還要高的輻射能時,電子從基態(ground state)被激發至能量較高的激發態(excited state),然後電子再由激發態衰退 (decay)至基態以產生放光。FIG. 4 is a graph showing the absorption spectrum and emission spectrum of the host material of the organic light-emitting
可以理解的是,根據上述的吸收光譜和放光光譜,在第一實施例中,界定為發光元件的單位像素32為該等藍光單位像素的原因在於,界定為感測元件的單位像素31為該等紅光單位像素,且保證該等紅光單位像素的感光區311的主體材料內部的分子吸收比自身能量還要高的輻射能,從而產生相對應的影像電訊號,然而本發明不限於此。It can be understood that, according to the above-mentioned absorption spectrum and emission spectrum, in the first embodiment, the reason why the
在一些實施例中,當本發明的全面屏顯示裝置進行生物特徵辨識時,界定為發光元件的單位像素32為該等藍光單位像素,界定為感測元件的單位像素31為該等綠光單位像素,無作用的單位像素33則為該等紅光單位像素。可以理解的是,根據上述的吸收光譜和放光光譜,在此實施例中,界定為發光元件的單位像素32為該等藍光單位像素的原因在於,界定為感測元件的單位像素31為該等綠光單位像素,且保證該等綠光單位像素的感光區311的主體材料內部的分子吸收比自身能量還要高的輻射能,從而產生相對應的影像電訊號,然而本發明不限於此。In some embodiments, when the full-screen display device of the present invention performs biometric identification, the
在一些實施例中,當本發明的全面屏顯示裝置進行生物特徵辨識時,界定為發光元件的單位像素32為該等綠光單位像素,界定為感測元件的單位像素31為該等紅光單位像素,無作用的單位像素33則為該等藍光單位像素。可以理解的是,根據上述的吸收光譜和放光光譜,在此實施例中,界定為發光元件的單位像素32為該等綠光單位像素的原因在於,界定為感測元件的單位像素31為該等紅光單位像素,且保證該等紅光單位像素的感光區311的主體材料內部的分子吸收比自身能量還要高的輻射能,從而產生相對應的影像電訊號,然而本發明不限於此。In some embodiments, when the full-screen display device of the present invention performs biometric identification, the
圖5是本發明的第二實施例的結構示意圖,圖6是本發明的第二實施例的有機發光二極體30的俯視圖。如圖5及圖6所示,第二實施例與第一實施例的結構差異在於:其一,有機發光二極體30設置於水氧阻絕層10的下方;其二,本發明的全面屏顯示裝置進一步包括一光吸收層60,光吸收層60設置在界定為感測元件的單位像素31與水氧阻絕層10之間,光吸收層60開設一通孔61,通孔61配置於透鏡51的一聚焦光徑511上且位於光吸收層60的中央;其三,感光區311位於界定為感測元件的單位像素31的中央且位於通孔61的下方;以及其四,光吸收層60不吸收界定為感測元件的單位像素31的放光波長。FIG. 5 is a schematic structural diagram of the second embodiment of the present invention, and FIG. 6 is a top view of the organic light-emitting
當本發明的全面屏顯示裝置界定為顯示螢幕時,單位像素31的放光波長能夠穿過光吸收層60。因此,光吸收層60不會影響本發明的全面屏顯示裝置的全面屏顯示的功效。When the full-screen display device of the present invention is defined as a display screen, the emission wavelength of the
圖7是本發明的第二實施例進行生物特徵辨識的示意圖。如圖7所示,當本發明的全面屏顯示裝置進行生物特徵辨識時,除了界定為感測元件的單位像素31的放光波長以外,外界的雜散光的波長和界定為發光元件的單位像素32的訊號光波長皆會被光吸收層60所吸收,降低外界的雜散光和界定為發光元件的單位像素32的訊號光反射和漫射的串擾。因此,只有匯聚的反射光會沿著透鏡51的聚焦光徑511通過光吸收層60的通孔61集中在感光區311上,藉以提高訊號雜訊比(signal-to-noise ratio, SNR)。Figure 7 is a schematic diagram of biometric identification according to the second embodiment of the present invention. As shown in FIG. 7 , when the full-screen display device of the present invention performs biometric identification, in addition to the emission wavelength of the
如圖5所示,感光區311的尺寸與通孔61的孔徑透過以下條件獲得:(1)微透鏡的曲面為球面、非球面或非對稱自由曲面,或者,超透鏡包括奈米微結構(圖未示);(2)
;(3)
;(4)
;(5)
;以及(6)
。其中,A為各單位像素的一尺寸,B為感光區311的一尺寸及通孔的一孔徑,D為水氧阻絕層10的一厚度,H為各微透鏡的一高度,R為各微透鏡的曲率,Z1為各微透鏡的一直徑,Z2為各開口41的一直徑。藉由上述條件,感光區311具有較小的尺寸,通孔61具有較小的孔徑,且感光區311的尺寸與通孔61的孔徑相等。
As shown in Figure 5, the size of the
更明確地說,感光區311的尺寸大小以及通孔61的孔徑大小皆與串擾(cross talk)的影響有很大的關係,原則上感光區311的尺寸愈小且通孔61的孔徑愈小(例如,感光區311的尺寸及通孔61的孔徑皆小於界定為感測元件的單位像素31的尺寸的1/10),串擾的影響愈小,再配合透鏡51將反射光匯聚在感光區311中,因此界定為發光元件的單位像素32的訊號光能量並不會因為感光區311的尺寸較小且通孔61的孔徑較小而減少,反而同時可以達到更好阻絕串擾的效果。重要的是,感光區311的尺寸愈小且通孔61的孔徑愈小,更不會影響到界定為感測元件的單位像素31在正常顯示下的顏色及可視角。To be more clear, the size of the
如圖5所示,在第二實施例中,光吸收層60實質上設置在界定為感測元件的單位像素31與水氧阻絕層10之間,光吸收層60不吸收界定為感測元件的單位像素31的放光波長。換言之,界定為感測元件的單位像素31的放光波長能夠穿過光吸收層60。As shown in FIG. 5 , in the second embodiment, the
如圖7所示,在第二實施例中,當本發明的全面屏顯示裝置進行生物特徵辨識時,界定為發光元件的單位像素32為該等藍光單位像素,界定為感測元件的單位像素31為該等紅光單位像素31,無作用的單位像素33為該等綠光單位像素33(即,處於關閉狀態,不發射入射光,也不接收反射光)。是以,外界的雜散光的波長和藍光波長皆會被光吸收層60所吸收,降低外界的雜散光和藍光波長的反射和漫射的串擾。再者,光吸收層60不吸收紅光波長,從而紅光波長能夠穿過光吸收層60。As shown in FIG. 7 , in the second embodiment, when the full-screen display device of the present invention performs biometric identification, the
在一些實施例中,當本發明的全面屏顯示裝置進行生物特徵辨識時,界定為發光元件的單位像素32為該等藍光單位像素,界定為感測元件的單位像素31為該等綠光單位像素,無作用的單位像素33則為該等紅光單位像素。是以,外界的雜散光的波長和藍光波長皆會被光吸收層60所吸收,降低外界的雜散光和藍光波長的反射和漫射的串擾。再者,光吸收層60不吸收綠光波長,從而綠光波長能夠穿過光吸收層60。In some embodiments, when the full-screen display device of the present invention performs biometric identification, the
在一些實施例中,當本發明的全面屏顯示裝置進行生物特徵辨識時,界定為發光元件的單位像素32為該等綠光單位像素,界定為感測元件的單位像素31為該等紅光單位像素,無作用的單位像素33則為該等藍光單位像素。是以,外界的雜散光的波長和綠光波長皆會被光吸收層60所吸收,降低外界的雜散光和綠光波長的反射和漫射的串擾。再者,光吸收層60不吸收紅光波長,從而紅光波長能夠穿過光吸收層60。In some embodiments, when the full-screen display device of the present invention performs biometric identification, the
如圖5及圖6所示,較佳地,通孔61位於光吸收層60的中央,且感光區311位於界定為感測元件的單位像素31的中央且位於通孔61的下方。更明確地說,通孔61的位置恰好位在匯聚的反射光的投射路徑上,從而能夠將匯聚的反射光集中在感光區311上。As shown in FIGS. 5 and 6 , preferably, the through
較佳地,光吸收層60的材料可為染料(organic dye)或顏料(pigment)。Preferably, the material of the
綜上所述,本發明的全面屏顯示裝置能夠藉由透鏡51將反射光匯聚到感光區311,同時界定為感測元件的單位像素31不放光,使得感光區311的尺寸大小的差異能夠阻絕生物特徵的串擾,藉以得到清晰的生物特徵影像。藉此,本發明的全面屏顯示裝置能夠提供半屏或全屏的大面積光學生物特徵辨識技術,以實現滿屏生物特徵按壓的功能。To sum up, the full-screen display device of the present invention can collect reflected light to the
以上所述者僅為用以解釋本發明的較佳實施例,並非企圖據以對本發明做任何形式上的限制,是以,凡有在相同的發明精神下所作有關本發明的任何修飾或變更,皆仍應包括在本發明意圖保護的範疇。The above are only used to explain the preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Therefore, any modifications or changes related to the present invention are made under the same spirit of the invention. , should still be included in the scope of protection intended by the present invention.
10:水氧阻絕層
11:第一表面
12:第二表面
20:保護面板
30:有機發光二極體
301:陽極
302:電洞傳輸層
303:發光層
304:電子傳輸層
305:陰極
31,32,33:單位像素
311:感光區
34:基板
35:像素電路
36:平坦化介電層
37:阻隔井
38:封裝層
40:光屏蔽層
41:開口
51,52,53:透鏡
511:聚焦光徑
60:光吸收層
61:通孔
100:待測物
A:單位像素的尺寸
B:感光區的尺寸(通孔的孔徑)
D:水氧阻絕層的厚度
H:微透鏡的高度
R:微透鏡的曲率
Z1:微透鏡的直徑
Z2:開口的直徑
10: Water and oxygen barrier layer
11: First surface
12: Second surface
20:Protective panel
30: Organic light emitting diode
301:Anode
302: Hole transport layer
303: Luminous layer
304:Electron transport layer
305:
圖1是本發明的第一實施例的結構示意圖。 圖2是本發明的第一實施例進行生物特徵辨識的示意圖。 圖3是本發明的第一實施例的有機發光二極體的剖面圖。 圖4是有機發光二極體的主體材料的吸收光譜和放光光譜的曲線圖。 圖5是本發明的第二實施例的結構示意圖。 圖6是本發明的第二實施例的有機發光二極體的俯視圖。 圖7是本發明的第二實施例進行生物特徵辨識的示意圖。 Figure 1 is a schematic structural diagram of the first embodiment of the present invention. Figure 2 is a schematic diagram of biometric identification according to the first embodiment of the present invention. FIG. 3 is a cross-sectional view of the organic light-emitting diode according to the first embodiment of the present invention. FIG. 4 is a graph showing the absorption spectrum and emission spectrum of the host material of the organic light-emitting diode. Figure 5 is a schematic structural diagram of the second embodiment of the present invention. FIG. 6 is a top view of an organic light-emitting diode according to the second embodiment of the present invention. Figure 7 is a schematic diagram of biometric identification according to the second embodiment of the present invention.
10:水氧阻絕層 10: Water and oxygen barrier layer
11:第一表面 11: First surface
12:第二表面 12: Second surface
20:保護面板 20:Protective panel
30:有機發光二極體 30: Organic light emitting diode
31,32,33:單位像素 31,32,33: unit pixel
311:感光區 311: Photosensitive area
40:光屏蔽層 40:Light shielding layer
41:開口 41:Open your mouth
51,52,53:透鏡 51,52,53:Lens
511:聚集光徑 511: Gathering light path
A:單位像素的尺寸 A: Size in unit pixels
B:感光區的尺寸 B: Size of photosensitive area
D:水氧阻絕層的厚度 D: Thickness of water and oxygen barrier layer
H:微透鏡的高度 H: height of microlens
R:微透鏡的曲率 R: curvature of microlens
Z1:微透鏡的直徑 Z1: Diameter of microlens
Z2:開口的直徑 Z2: Diameter of the opening
Claims (10)
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| US202263431332P | 2022-12-09 | 2022-12-09 | |
| US63/431,332 | 2022-12-09 |
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| TW112111770A TWI832739B (en) | 2022-12-09 | 2023-03-28 | Full screen display device with unit pixel having function for emitting and receiving light |
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| US20170364763A1 (en) * | 2016-06-15 | 2017-12-21 | Samsung Electronics Co., Ltd. | Electronic device supporting fingerprint verification function and method for operating the same |
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| TWI832739B (en) | 2024-02-11 |
| CN118175871A (en) | 2024-06-11 |
| US12307954B2 (en) | 2025-05-20 |
| US20240193984A1 (en) | 2024-06-13 |
| US12307953B2 (en) | 2025-05-20 |
| CN118175890A (en) | 2024-06-11 |
| US20240194128A1 (en) | 2024-06-13 |
| TW202424908A (en) | 2024-06-16 |
| TW202424713A (en) | 2024-06-16 |
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